Question

Can someone explain how to solve this problem

Answer 1

Answer:
`\displaystyle 2x^4 + 9x^3-8x^2+9x -13`

Explanation:

Given:

`\displaystyle (2x^4 + 9x^3 -8)-(8x^2-9x+5)`

Subtract the second term:

`\displaystyle (2x^4 + 9x^3 -8)-8x^2+9x-5`

Reorder by the power's degree:

`\displaystyle 2x^4 + 9x^3-8x^2+9x -8-5`

Combine like terms:

`\displaystyle 2x^4 + 9x^3-8x^2+9x -13`